Answer:
The correct answers are option b. "molt during growth" and option c. "secrete an external cuticle".
Explanation:
The species of the Ecdysozoa superphylum are protostome animals, that involve a large group including insects, spiders, crustaceans and nematodes. Members of the Ecdysozoa superphylum molt during growth, beginning its life in a basic form and transforming into an adult form by a molting process (or metamorphosis). Members of the Ecdysozoa superphylum also secrete an external cuticle, which serves as a flexible exoskeleton that protects them from external conditions such as weather and predators.
